Using Smartwaiver’s API, you want to import the waiver information as soon as the participant lands on your Redirect URL. When setting your Redirect URL set the location of the the waiver’s ID value to “[waiverid]”.
This can be used in conjunction with your auto-tag like this:
To query the API for that specific waiver’s participant use rest_waiverid query option in the Smartwaiver API documentation.
How do I set up a redirect URL for my waivers?